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SALIKA O, KEOBOUALAPHETH S. Marketing Strategy to increase Competitive Advantages on Mobile Phone Service Business for ETL Company Limited’s in Luang Prabang Oudom . sujournal [Internet]. 2020 Dec. 5 [cited 2026 Jan. 17];6(3):1499-507. Available from: http://www.su-journal.com/index.php/su/article/view/301